Social Objects and Business Cards are quite popular.
Readable code, such as Ruby on Rails, is quite fun.
Moo Cards? You love ‘em.
100% Open Source business model, yeah baby.
Huge dollop of inspiration from Le Libre Web 3.0 spat out by friends.
Freaky freeconomical, ambiently intimate, user-actor zentric mashup.
Gimp Stylee.
Rawk on!